Ford, J. L. (2008). Scratch programming for teens. Course Technology.
Chicago-čujuhus (17. p.)Ford, Jerry Lee. Scratch Programming for Teens. Boston, MA: Course Technology, 2008.
MLA-čujuhus (9. p.)Ford, Jerry Lee. Scratch Programming for Teens. Course Technology, 2008.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.